CN115135878B - Check valve and swash plate type compressor including the same - Google Patents
Check valve and swash plate type compressor including the same Download PDFInfo
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- CN115135878B CN115135878B CN202180015250.0A CN202180015250A CN115135878B CN 115135878 B CN115135878 B CN 115135878B CN 202180015250 A CN202180015250 A CN 202180015250A CN 115135878 B CN115135878 B CN 115135878B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B27/1009—Distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Check Valves (AREA)
- Compressor (AREA)
Abstract
The present invention relates to a check valve and a swash plate compressor including the check valve, and the check valve may be configured to include: a valve body having a first opening formed in a center portion of one side into which a refrigerant flows, a hook formed in a periphery of one side, and a second opening formed in the other side through which the refrigerant is discharged, the hook being coupled to a coupling groove formed in a suction port of a rear case; and a pulsation reducing unit provided inside the other end portion of the valve body to delay the flow of the refrigerant and reduce pulsation of the refrigerant when the refrigerant flows in from the first opening portion and is discharged to the second opening portion.
Description
Technical Field
The present invention relates to a check valve (CHECK CALVE) and a swash plate compressor including the same, and more particularly, to a check valve reducing pulsation by delaying a flow of a refrigerant and a swash plate compressor including the same.
Background
Various types of compressors, which compress refrigerant in a cooling system of a vehicle, have been generally developed, and include a reciprocating compressor that performs compression while a structure compressing refrigerant reciprocates, and a rotary compressor that performs compression while a structure compressing refrigerant rotates.
Wherein the reciprocating compressor comprises: a crank compressor for transmitting a driving force of a driving source to a plurality of pistons by means of a crank; a swash plate compressor transmitting a driving force of a driving source to a rotary shaft having a swash plate; and a wobble plate type compressor using the wobble plate, the rotary compressor including: a vane compressor using a rotating shaft and vanes; and a scroll compressor using an orbiting scroll and a fixed scroll.
Swash plate compressors are classified into a fixed capacity type in which a set angle of a swash plate is fixed and a variable capacity type in which a discharge amount can be changed by changing an inclination angle of the swash plate.
Fig. 1 discloses one form of a prior art check valve 1. In the conventional check valve 1, a hook 2 is provided on one side of a valve body 3, and an inflow port 9 through which a refrigerant flows is provided on the center side of the hook 2 on one side. An outflow port 4 for discharging the refrigerant flowing in from the inflow port 9 is provided on the other side of the valve body 3.
Fig. 2 discloses a state in which the check valve 1 shown in fig. 1 is coupled with a stepped portion 6a of a suction port 7 formed on a rear housing 6 of a swash plate compressor by a hook 2. At this time, the check valve 1 functions as a suction valve (suction valve).
Inside the cylinder bores, the pistons reciprocate with the movement of the swash plate, and in order to allow the refrigerant to flow in and compress, the refrigerant flows into the suction chamber of the rear housing 6 by the internal pressure of the cylinder bores.
At this time, the check valve 1 is provided at the suction port 7 to regulate the flow of the refrigerant.
That is, the refrigerant flowing in from the suction port 7 flows into the inflow port 9, and flows into the suction chamber 8 through the outflow port 4 in the valve body 3.
The structure of the conventional check valve 1 does not significantly reduce the flow rate of the refrigerant inside thereof. Therefore, the delay in the flow of the refrigerant does not smoothly occur in the check valve 1, and the refrigerant flowing in from the inflow port 9 is directly discharged from the outflow port 4, and the pulsation reducing effect does not occur. This is one of the causes of noise, vibration, and the like of the compressor.
Disclosure of Invention
Technical problem to be solved
The present invention has been made to solve the above-described problems occurring in the related art, and an object of the present invention is to provide a check valve for delaying the flow of refrigerant to reduce pulsation, and a swash plate compressor including the check valve.
Means for solving the problems
In order to achieve the above object, the present invention relates to a check valve, which may include: a valve body having a first opening formed in a center portion of one side into which a refrigerant flows, a hook formed in a periphery of one side, and a second opening formed in the other side through which the refrigerant is discharged, the hook being coupled to a coupling groove formed at a suction port of the rear case; and a pulsation reducing unit provided inside the other end portion of the valve body to delay the flow of the refrigerant and reduce pulsation of the refrigerant when the refrigerant flows in from the first opening portion and is discharged to the second opening portion.
In addition, in the embodiment of the present invention, the pulsation reducing unit may include a protruding block provided to protrude toward the first opening portion in an inner side of the other end portion of the valve body so as to collide the refrigerant flowing in from the first opening portion and delay the flow to reduce pulsation of the refrigerant.
In the embodiment of the present invention, a flat portion may be formed at an upper end portion of the protruding block, and the flat portion may collide with the refrigerant flowing in from the first opening portion, delay the flow, and discharge the refrigerant in the second opening portion direction.
In addition, in the embodiment of the present invention, the pulsation reducing unit may further include a first recess portion formed between the second opening portion and the protruding block inside the other end portion of the valve body, and inside the first recess portion, the inflow refrigerant and the outflow refrigerant collide with each other to reduce pulsation.
In addition, in an embodiment of the present invention, the first recess may have a curved shape connecting an end of the protruding block and an end of the second opening.
In addition, in the embodiment of the present invention, an auxiliary flow hole may be formed at an upper end portion of the protruding block, and the auxiliary flow hole may additionally discharge the refrigerant flowing in from the first opening portion to compensate for a flow obstruction of the refrigerant due to the formation of the protruding block.
In addition, in an embodiment of the present invention, the auxiliary flow hole may be formed in plurality at an upper end portion of the protruding block.
In addition, in the embodiment of the present invention, the pulsation reducing unit may include a blocking protrusion provided adjacent to the second opening portion inside the other end portion of the valve body and protruding in the direction of the first opening portion to block the flow of the refrigerant discharged to the second opening portion to reduce pulsation.
In the embodiment of the present invention, the blocking protrusion may be provided between the width intervals (D1) of the second opening portion, and may block the flow of the refrigerant discharged to the second opening portion to reduce pulsation.
In addition, in an embodiment of the present invention, the blocking protrusion may have a cylindrical shape.
In addition, in the embodiment of the present invention, the second opening may be formed in plurality on the other side of the valve body, and the pulsation reducing means may include a guide protrusion provided between the plurality of second openings on the inner side of the other end portion of the valve body and protruding in the first opening direction so as to disperse the flow of the refrigerant flowing from the first opening to the second opening to reduce pulsation.
In the embodiment of the present invention, the guide projection may be provided in plural on the inner side of the other end portion of the valve body, and a pair of guide projections provided on both sides of one of the plurality of second opening portions may be formed with straight portions in directions toward the second opening portion, respectively, and may guide the flow of the refrigerant from the center side of the valve body toward the second opening portion.
In the embodiment of the present invention, a distance (D2) between the pair of straight portions may be set within a width distance (D1) between the second openings.
In addition, in the embodiment of the present invention, the pulsation reducing unit may further include a second recess portion formed between the second opening portion and the guide protrusion inside the other end portion of the valve body, and inside the second recess portion, the inflow refrigerant and the outflow refrigerant collide with each other to reduce pulsation.
In addition, in the embodiment of the present invention, the pulsation reducing unit may include a base block that is connected to a lower end portion of the second opening portion inside the other end portion of the valve body and is provided so as to protrude in the direction of the first opening portion, so that the refrigerant flowing in from the first opening collides with and delays the flow to reduce pulsation.
In the embodiment of the present invention, a rounded portion may be formed on the outer periphery of the upper end portion of the base block, and the refrigerant flowing in from the first opening portion may flow in the direction of the second opening portion along the rounded portion after colliding with the upper end portion of the base block.
In addition, in the embodiment of the present invention, an extension protrusion extending from the center side of the base block toward the second opening may be formed in the base block, and the extension protrusion may guide the flow of the refrigerant from the center side of the base block toward the second opening.
In addition, in the embodiment of the present invention, a width interval (D4) of the extension protrusion may be provided between width intervals (D1) of the second opening portion.
The swash plate compressor of the present invention may include: a cylinder body having a cylinder hole formed therein; a front case coupled to a front of the cylinder to form a crank chamber; a rear housing coupled to a rear of the cylinder to form a suction chamber and a discharge chamber; and a check valve according to any one of the above embodiments, provided at a suction port formed at the suction chamber.
Effects of the invention
According to the present invention, the piston reciprocates inside the cylinder bore by the movement of the swash plate, at which time pulsation is necessarily generated in the flow of the refrigerant, and this pulsation phenomenon can be reduced inside the check valve by delaying the flow of the refrigerant.
As a result, vibration and noise of the swash plate compressor can be reduced, thereby contributing to improvement in quality.
Drawings
Fig. 1 is a diagram showing a conventional check valve.
Fig. 2 is a side view illustrating a state in which the conventional check valve shown in fig. 1 is mounted on a rear housing of a swash plate compressor.
Fig. 3 is a side view showing the structure of the swash plate type compressor of the present invention.
Fig. 4 is a view showing a first embodiment of the check valve of the present invention.
Fig. 5 is a view showing a state in which the check valve shown in fig. 4 is disposed in the discharge chamber of the rear housing.
Fig. 6 is a graph comparing pulsation degrees between a conventional check valve and a check valve of the present invention.
Fig. 7 is a side view showing a second embodiment of the check valve of the present invention.
Fig. 8 is a top view of the check valve shown in fig. 7.
Fig. 9 is a side view showing another form of the second embodiment of the check valve of the present invention.
Fig. 10 shows a side view of a third embodiment of the check valve of the present invention.
Fig. 11 is a top view of the check valve shown in fig. 10.
Fig. 12 is a side view showing a fourth embodiment of the check valve of the present invention.
Fig. 13 is a top view of the check valve shown in fig. 12.
Fig. 14 is a side view showing a fifth embodiment of the check valve of the present invention.
Fig. 15 is a top view of the check valve shown in fig. 14.
Detailed Description
Hereinafter, preferred embodiments of a check valve and a swash plate compressor including the same according to the present invention will be described in detail with reference to the accompanying drawings.
First, a basic configuration of the swash plate compressor according to the present invention will be described with reference to fig. 3. However, the present invention is not limited to be applied to such a structure, and the description of the swash plate type compressor is only effective in understanding the scope of the present invention.
Referring to fig. 3, the swash plate compressor 10 has a cylinder block 20 forming a part of an external appearance and a frame. At this time, a center hole 21 is formed through the center of the cylinder 20, and the shaft 60 is rotatably provided in the center hole 21.
May include a cylinder 20, a front housing 30, and a rear housing 40 and is referred to as a housing 10.
The plurality of cylinder bores 22 are formed to penetrate the cylinder block 20 radially around the center bore 21, and the piston 70 is provided inside the cylinder bore 22 so as to be capable of rectilinear reciprocation. At this time, the piston 70 is formed in a cylindrical shape, the cylinder hole 22 is a cylindrical space corresponding thereto, and the refrigerant in the cylinder hole 22 is compressed by the reciprocation of the piston 70. The cylinder bore 22 and the piston 70 form a compression chamber.
A front case 30 is coupled to the front of the cylinder 20. The surface of the front case 30 facing the cylinder block 20 is recessed, and a crank chamber 31 is formed inside together with the cylinder block 20.
A pulley 32 connected to an external power source (not shown) such as an engine is rotatably provided in front of the front case 30, and the shaft 60 rotates in association with the rotation of the pulley 32.
A rear case 40 is coupled to the rear of the cylinder 20. At this time, in the rear housing 40, a discharge chamber 41 is formed along a position adjacent to the outer peripheral edge of the rear housing 40 to selectively communicate with the cylinder hole 22.
The suction port 45 is formed on one side of the rear case 40, and is connected to the suction chamber 42 disposed on the center side of the rear case 40. However, the present invention is not limited thereto, and may be located at other positions according to the type of compressor.
At this time, the valve plate 50 is interposed between the cylinder block 20 and the rear housing 40, and the discharge chamber 41 communicates with the cylinder bore 22 through a discharge port formed on the valve plate 50.
In addition, a swash plate 61 is provided on the outer peripheral surface of the shaft 60, and is connected to each piston 70 by a guide block 62 provided along the edge of the swash plate 61, and the pistons 70 perform linear reciprocation in the cylinder bores 22 by rotation of the swash plate 61.
At this time, in order to adjust the refrigerant discharge amount of the compressor 10, the angle of the swash plate 61 with respect to the shaft 60 may be set to be changed. For this purpose, the opening degree of a passage that communicates the discharge chamber 41 with the crank chamber 31 is regulated by a pressure regulating valve (not shown).
In the conventional swash plate compressor having the above-described structure, most of the cylinder bores 22 formed in the cylinder block 20 are formed in a so-called radial symmetrical structure in which they are radially spaced apart from each other about the shaft 60.
When the swash plate 61 is rotated by the above-described structure, the plurality of pistons 70 move to compress the refrigerant, the valve is opened by the oil pressure, and the compressed refrigerant is pushed to the discharge chamber 41 through the discharge port of the valve plate 50.
Wherein a check valve 100 is provided on a suction passage 43 connecting the outside with the suction chamber 42. The check valve 100 flows the refrigerant into the suction chamber 42 from the outside according to the pressure formed inside the piston 70 and the cylinder bore 22 by the movement of the swash plate 61. The check valve 100 maintains a relatively uniform pressure when the refrigerant flows in, thereby having an effect of reducing noise and vibration at the time of operation of the compressor.
Fig. 4 is a view showing a first embodiment of the check valve 100 of the present invention, fig. 5 is a view showing a state in which the check valve 100 shown in fig. 4 is disposed in the discharge chamber of the rear housing 40, and fig. 6 is a view comparing the pulsation degree between the conventional check valve 100 and the check valve 100 of the present invention.
Referring to fig. 4 and 5, the first embodiment of the check valve 100 of the present invention may include a first opening portion 120, a hook portion 112, a second opening portion 130, a valve body 110, and a pulsation reducing unit 200.
The valve body 110 forms the main body of the check valve 100, and may be formed in a cylindrical shape as a whole.
The first opening 120 may be provided at a center portion of the valve body 110 side, and may be a portion into which the coolant flows. The second opening 130 may be provided along the other side periphery of the valve body 110, and may be a portion from which the refrigerant flowing in from the first opening 120 is discharged.
The hook 112 may be provided along one side periphery of the valve body 110, and may be coupled to a coupling groove 45a formed at the suction port 45 of the rear case 40.
Next, the pulsation reducing unit 200 may be provided at an inner side of the other end portion of the valve body 110 to delay the flow of the refrigerant when the refrigerant flows in from the first opening 120 and is discharged to the second opening 130, thereby reducing pulsation of the refrigerant.
In the first embodiment of the present invention, the pulsation reducing unit 200 may include a protrusion block 210, and the protrusion block 210 may be provided to protrude toward the first opening 120 inside the other end portion of the valve body 110 so as to collide the refrigerant flowing in from the first opening 120 to delay the flow, thereby reducing pulsation of the refrigerant.
A flat portion 213 may be formed at an upper end portion of the protruding block 210 such that the refrigerant flowing in from the first opening 120 collides with the flat portion to delay the flow of the refrigerant and is discharged toward the second opening 130.
Referring to fig. 5, it is possible to confirm a state in which the protruding block 210 is provided, and the refrigerant flowing in through the first opening 120 collides at an upper portion of the protruding block 210 indicated by an X region, thereby being dispersed along an outer circumference of the protruding block 210.
Then, the air enters along the second opening 130 and flows into the suction chamber 42.
At this time, the refrigerant is delayed in the process of colliding with the protruding block 210 to detour along the outer circumference. That is, the flow rate of the refrigerant decreases, and as the time remaining inside the check valve 100 increases, the pulsation of the refrigerant decreases.
In other words, as the time for which the refrigerant flowing in from the first opening 120 flows out to the second opening 130 increases, pulsation of the refrigerant naturally decreases due to the delay effect while passing through the check valve 100.
In addition, in the first embodiment of the present invention, the pulsation reducing unit 200 may further include a first recess 211, and the first recess 211 may be formed between the second opening 130 and the protrusion block 210 inside the other end portion of the valve body 110.
Inside the first concave portion 211, the refrigerant flowing into the first concave portion 211 collides with the refrigerant flowing out of the first concave portion 211, thereby reducing the flow rate of the refrigerant and reducing pulsation.
That is, in the first embodiment of the present invention, the protruding block 210 and the first concave portion 211, in which the flat portion 213 is formed, reduce the flow rate of the refrigerant by collision inside the check valve 100, thereby achieving the pulsation reducing effect.
The first recess 211 may have a curved shape connecting an end of the protruding block 210 and an end of the second opening 130. This is to smoothly discharge the refrigerant, which is offset in the first recess 211 and has a reduced flow rate, to the second opening 130 by connecting the end of the protruding block 210 and the end of the second opening 130 in a curved shape.
By forming the protruding block 210 and the first concave portion 211 having the flat portion 213 as described above, the flow of the refrigerant is delayed, thereby reducing the flow rate of the refrigerant, which increases the time for which the refrigerant remains inside the check valve 100, and eventually reduces the pulsation of the refrigerant.
Next, referring to fig. 6, comparative experimental data of pulsation pressure at the suction port between the conventional check valve a and the check valve B of the present invention is disclosed.
In the case of the existing check valve a, the pulsating pressure was measured at 0.0248bar, and in the case of the check valve B of the present invention, the pulsating pressure was measured at 0.0214bar. The pulsation pressure was reduced by about 13%.
That is, as can be seen from the result of the reduction in the pulsation pressure, the check valve B of the present invention reduces the flow rate of the refrigerant as compared with the conventional check valve a, thereby obtaining an effect of reducing the pulsation of the refrigerant as a whole.
On the other hand, fig. 7 is a side view showing a second embodiment of the check valve 100 of the present invention, fig. 8 is a top view of the check valve 100 shown in fig. 7, and fig. 9 is a side view showing another form of the second embodiment of the check valve 100 of the present invention.
Referring to fig. 7 to 9, the structure of the second embodiment of the check valve 100 of the present invention can be confirmed. In the second embodiment of the check valve 100 of the present invention, the auxiliary flow hole 215 may be included in addition to the first opening 120, the second opening 130, the hook 112, the valve body 110, the protruding block 210, and the first recess 211 described above.
The first opening 120, the second opening 130, the hook 112, the valve body 110, the protruding block 210, and the first recess 211 are described in the same manner as in the first embodiment, and therefore, description thereof will be omitted.
The auxiliary moving hole 215 may be formed at an upper end portion of the protruding block 210. Such auxiliary flow holes 215 may be provided to additionally discharge the refrigerant flowing in from the first opening 120 to the suction chamber 42 so as to compensate for the flow obstruction of the refrigerant generated when the protruding block 210 is formed.
Referring to fig. 7, since the auxiliary flow hole 215 is formed, a part of the refrigerant flowing from the first opening 120 directly flows into the suction chamber 42 through the auxiliary flow hole 215, so that a variation in the refrigerant supply amount due to a reduction in the flow rate at the protrusion block 210 and the first recess 211 can be compensated for to some extent.
Fig. 8 discloses a configuration in which the auxiliary flow holes 215 are formed in one shape with a relatively large diameter, and fig. 9 discloses a configuration in which the auxiliary flow holes 215 are formed in plurality at the upper end portion of the protruding block 210 with a relatively small diameter. The position, size and number of the auxiliary flow holes 215 may be changed according to design specifications.
On the other hand, fig. 10 is a side view showing a third embodiment of the check valve 100 of the present invention, and fig. 11 is a top view of the check valve 100 shown in fig. 10.
In the third embodiment of the check valve 100 of the present invention, the first opening 120, the second opening 130, the hook 112, and the valve body 110 are described in the same manner as in the first embodiment, and therefore, description thereof will be omitted below. Hereinafter, a pulsation reducing unit 200 different from the first embodiment is described.
Referring to fig. 10 and 11, in the third embodiment of the check valve 100 of the present invention, the pulsation reducing unit 200 may include a blocking protrusion 220.
The blocking protrusion 220 may be disposed adjacent to the second opening 130 at an inner side of the other end portion of the valve body 110 and formed to protrude toward the first opening 120 to block a flow of the refrigerant discharged to the second opening 130, thereby reducing pulsation.
Referring to fig. 10, in the embodiment of the present invention, the above-described blocking protrusions 220 may be implemented in a cylindrical shape, and since four second opening parts 130 are formed along the other side circumference of the valve body 110, the four blocking protrusions 220 may be disposed adjacent to the second opening parts 130, respectively. Of course, the shape of the above-described blocking protrusion 220 is not limited to a cylindrical shape.
Since the blocking protrusion 220 is provided adjacent to the second opening 130, when the refrigerant flowing in from the first opening 120 passes through the blocking protrusion 220, the flow of the refrigerant is blocked to detour and enter in the direction of the second opening 130.
Referring to fig. 11, the blocking protrusion 220 is provided between the width intervals D1 of the second opening 130, and serves to block the flow of the refrigerant discharged to the second opening 130 and reduce pulsation of the refrigerant.
Wherein, the blocking protrusion 220 may have a width smaller than the width interval D1 of the second opening 130.
The blocking protrusion 220 is preferably provided at a center portion of the width interval D1 of the second opening 130 so as to cause uniform flow blocking in the lateral direction of the second opening 130 when the refrigerant is discharged to the second opening 130.
As shown by the arrow indicating the flow direction of the refrigerant shown in fig. 11, the refrigerant bypasses the above-mentioned blocking protrusion 220 and is discharged to the suction chamber 42 through the second opening 130.
Such a flow obstruction by the obstruction protrusion 220 reduces the flow rate of the refrigerant, increases the time remaining inside the check valve 100, and finally can lead to an effect of reducing pulsation of the refrigerant.
On the other hand, fig. 12 is a side view showing a fourth embodiment of the check valve 100 of the present invention, and fig. 13 is a top view of the check valve 100 shown in fig. 12.
In the check valve 100 of the fourth embodiment of the present invention, the first opening 120, the second opening 130, the hook 112, and the valve body 110 are explained in the same manner as in the first embodiment, and therefore, the explanation thereof will be omitted below. Next, a pulsation reducing unit 200 different from the first embodiment is described.
In the fourth embodiment of the present invention, the pulsation reducing unit 200 may include a guide protrusion 230, and the guide protrusion 230 may be disposed between the plurality of second opening parts 130 at an inner side of the other end part of the valve body 110 and protrude toward the first opening part 120 to disperse the flow of the refrigerant flowing from the first opening part 120 to the second opening part 130, thereby reducing pulsation.
Referring to fig. 13, the guide protrusion 230 may be provided in plurality inside the other end portion of the valve body 110.
Further, a pair of guide protrusions 230 provided at both sides of one second opening 130 of the plurality of second openings 130 may be formed with straight portions 231 along a direction toward the second opening 130, respectively, and such a pair of straight portions 231 may guide a flow of the refrigerant from a center side of the valve body 110 toward the second opening 130.
At this time, the interval D2 of the pair of straight portions 231 may be set within the width interval D1 of the second opening 130. This is to smoothly discharge the refrigerant guided by the pair of straight portions 231 to the second opening 130.
That is, the plurality of guide protrusions 230 are provided between the plurality of second opening parts 130, collide with the refrigerant flowing in from the first opening part 120 to reduce the flow rate of the refrigerant, and reduce pulsation of the refrigerant.
In order to compensate for the refrigerant discharge flow to the second opening 130, for example, the straight line portion 231 is formed in the same manner as the auxiliary flow hole 215 of the first embodiment so as to compensate for the refrigerant supply in accordance with the amount of the blocked refrigerant flow.
As a result, as shown by an arrow indicating a flow direction of the refrigerant shown in fig. 13, the refrigerant collides with the guide protrusion 230 to bypass the guide protrusion 230, is guided along the straight line portion 231, and is then discharged to the suction chamber 42 through the second opening portion 130.
Due to such flow obstruction of the above-described guide protrusion 230, the flow rate of the refrigerant decreases, and the time remaining inside the check valve 100 increases, so that the effect of reducing pulsation of the refrigerant can be derived.
In addition, by forming the pair of straight portions 231, the flow of the refrigerant directed to the second opening portion 130 is guided, thereby compensating the refrigerant supply.
Next, the pulsation reducing unit 200 may further include a second recess 233, and the second recess 233 may be formed between the second opening 130 and the guide protrusion 230 inside the other end portion of the valve body 110. Inside such a second concave portion 233, similarly to the function of the first concave portion 211 of the first embodiment, the inflow refrigerant and the refrigerant to be discharged collide with each other, thereby reducing pulsation.
That is, in the fourth embodiment of the present invention, the following effects are achieved by the configuration of the guide protrusion 230, the straight portion 231, and the second concave portion 233 described above: the flow of the refrigerant is guided while the flow rate reduction pulsation of the refrigerant is reduced by collision inside the check valve 100, and the refrigerant flow due to the reduction in the flow rate of the refrigerant is compensated.
On the other hand, fig. 14 is a side view showing a fifth embodiment of the check valve 100 of the present invention, and fig. 15 is a top view of the check valve 100 shown in fig. 14.
In the check valve 100 of the fifth embodiment of the present invention, the first opening 120, the second opening 130, the hook 112, and the valve body 110 are explained in the same manner as in the first embodiment, and therefore, the explanation thereof will be omitted below. Next, a pulsation reducing unit 200 different from the first embodiment is described.
In the fifth embodiment of the present invention, the pulsation reducing unit 200 may be constructed to include a base block 240 and an extension protrusion 245.
The base block 240 may be connected to a lower end portion of the second opening 130 at an inner side of the other end portion of the valve body 110, and may be provided to protrude toward the first opening 120 so as to collide the refrigerant flowing in from the first opening 120 and delay the flow, thereby reducing pulsation.
At this time, a rounded portion 241 may be formed at the outer circumference of the upper end portion of the base block 240, and the refrigerant flowing in from the first opening 120 may collide with the upper end portion of the base block 240 and then flow along the rounded portion 241 toward the second opening 130.
Since the center portion of the upper end of the base block 240 is flat, the refrigerant flowing in from the first opening 120 collides with and delays the flow.
Referring to fig. 14, it is possible to confirm a state in which the base block 240 is installed, and the refrigerant flowing in through the first opening 120 collides with the upper center portion of the base block 240 and is dispersed along the outer circumference of the base block 240.
The flow is smoothly guided along the rounded portion 241, and enters in the direction of the second opening 130 and is discharged to the suction chamber 42.
At this time, the flow of the refrigerant is delayed while colliding with the base block 240 and detouring along the outer circumferential direction of the base block 240. That is, the flow rate of the refrigerant decreases, and as the time remaining in the check valve 100 increases, the pulsation of the refrigerant decreases.
Then, the extension protrusion 245 may be formed to extend from the center side of the base block 240 toward the second opening 130. The extension protrusion 245 may perform a function of guiding a flow of the refrigerant from the center side of the base block 240 toward the second opening 130.
Such a width interval D4 of the extension protrusion 245 may be provided between the width intervals D1 of the second opening 130. Therefore, the refrigerant guided along the rounded portion 241 of the base block 240 in the direction of the second opening 130 is guided to the second opening 130 by the extension protrusion 245.
That is, in the fifth embodiment of the present invention, the following effects are achieved by the above-described configuration of the base block 240 and the extension projection 245: the pulsation is reduced by reducing the flow rate of the refrigerant by collision inside the check valve 100, guiding the flow of the refrigerant and compensating for the flow of the refrigerant due to the reduction in the flow rate of the refrigerant.
The above matters only show a specific embodiment of the check valve and the swash plate type compressor including the same.
Accordingly, it will be understood by those skilled in the art that the present invention may be substituted or altered in various forms without departing from the spirit of the invention.
Industrial applicability
The present invention relates to a check valve and a swash plate type compressor, which are industrially available.
Claims (13)
1. A check valve, comprising:
A valve body having a first opening formed in a center portion of one side into which a refrigerant flows, a hook formed in a periphery of one side, and a second opening formed in the other side through which the refrigerant is discharged, the hook being coupled to a coupling groove formed at a suction port of the rear case; and
A pulsation reducing unit provided inside the other end portion of the valve body to delay the flow of the refrigerant when the refrigerant flows in from the first opening portion and is discharged to the second opening portion to reduce pulsation of the refrigerant,
The pulsation reducing unit includes:
A protruding block provided so as to protrude in the first opening direction in an inner side of the other end portion of the valve body, so as to collide the refrigerant flowing in from the first opening and delay the flow to reduce pulsation of the refrigerant;
a flat portion formed at an upper end portion of the protruding block, the flat portion colliding the refrigerant flowing in from the first opening portion and delaying the flow to be discharged in the second opening portion direction; and
A first recess portion formed between the second opening portion and the protruding block inside the other end portion of the valve body,
Wherein inside the first concave portion, the refrigerant flowing into the first concave portion collides with the refrigerant flowing out of the first concave portion to reduce pulsation, and
The first recess portion has a curved shape connecting an end of the protruding block and an end of the second opening portion.
2. The check valve of claim 1, wherein the valve is configured to,
An auxiliary flow hole is formed at an upper end portion of the protruding block, and the auxiliary flow hole additionally discharges the refrigerant flowing in from the first opening portion to compensate for a flow obstruction of the refrigerant due to the formation of the protruding block.
3. The check valve of claim 2, wherein the valve is configured to,
The auxiliary flow holes are formed in plurality at an upper end portion of the protruding block.
4. A check valve, comprising:
A valve body having a first opening formed in a center portion of one side into which a refrigerant flows, a hook formed in a periphery of one side, and a second opening formed in the other side through which the refrigerant is discharged, the hook being coupled to a coupling groove formed at a suction port of the rear case; and
A pulsation reducing unit provided inside the other end portion of the valve body to delay the flow of the refrigerant and reduce pulsation of the refrigerant when the refrigerant flows in from the first opening portion and is discharged to the second opening portion; and
The pulsation reducing unit includes a blocking protrusion provided adjacent to the second opening portion inside the other end portion of the valve body and protruding in the direction of the first opening portion to block the flow of the refrigerant discharged to the second opening portion to reduce pulsation.
5. The check valve of claim 4, wherein the valve is configured to,
The blocking projections are provided between the width intervals (D1) of the second opening portions, and block the flow of the refrigerant discharged to the second opening portions to reduce pulsation.
6. The check valve of claim 4, wherein the valve is configured to,
The blocking protrusion has a cylindrical shape.
7. A check valve, comprising:
A valve body having a first opening formed in a center portion of one side into which a refrigerant flows, a hook formed in a periphery of one side, and a second opening formed in the other side through which the refrigerant is discharged, the hook being coupled to a coupling groove formed at a suction port of the rear case; and
A pulsation reducing unit provided inside the other end portion of the valve body to delay the flow of the refrigerant and reduce pulsation of the refrigerant when the refrigerant flows in from the first opening portion and is discharged to the second opening portion;
Wherein the second opening part is formed in plurality on the other side of the valve body, and
The pulsation reducing unit includes a guide protrusion provided between the plurality of second opening portions inside the other end portion of the valve body and protruding in the first opening portion direction so as to disperse a flow of the refrigerant flowing from the first opening portion to the second opening portion to reduce pulsation.
8. The check valve of claim 7, wherein the valve is configured to,
The guide protrusion is provided in plurality inside the other end portion of the valve body,
A pair of guide protrusions provided on both sides of one of the plurality of second openings are each formed with a linear portion in a direction toward the second opening, and guide a flow of the refrigerant from a center side of the valve body toward the second opening.
9. The check valve of claim 8, wherein the valve is configured to,
A distance (D2) between the pair of straight portions is set within a width distance (D1) between the second openings.
10. The check valve of claim 7, wherein the valve is configured to,
The pulsation reducing unit further includes a second recess portion formed between the second opening portion and the guide protrusion inside the other end portion of the valve body,
Inside the second concave portion, the inflowing refrigerant collides with the refrigerant to be outflowing to reduce pulsation.
11. A check valve, comprising:
A valve body having a first opening formed in a center portion of one side into which a refrigerant flows, a hook formed in a periphery of one side, and a second opening formed in the other side through which the refrigerant is discharged, the hook being coupled to a coupling groove formed at a suction port of the rear case; and
A pulsation reducing unit provided inside the other end portion of the valve body to delay the flow of the refrigerant and reduce pulsation of the refrigerant when the refrigerant flows in from the first opening portion and is discharged to the second opening portion;
Wherein the pulsation reducing unit includes a base block connected to a lower end portion of the second opening portion inside the other end portion of the valve body and provided so as to protrude in the direction of the first opening portion, so as to collide the refrigerant flowing in from the first opening portion and delay the flow to reduce pulsation,
Wherein a rounded portion is formed on the outer periphery of the upper end portion of the base block,
The refrigerant flowing in from the first opening portion collides with the upper end portion of the base block and then flows along the rounded portion toward the second opening portion,
Wherein an extension protrusion extending from the center side of the base block toward the second opening portion is formed on the base block, and
The extension protrusion guides a flow of the refrigerant from a center side of the base block toward the second opening portion.
12. The check valve of claim 11, wherein the valve is configured to,
The width interval (D4) of the extension protrusion is disposed between the width intervals (D1) of the second opening portion.
13. A swash plate compressor, comprising:
A cylinder body having a cylinder hole formed therein;
A front case coupled to a front of the cylinder to form a crank chamber;
a rear housing coupled to a rear of the cylinder to form a suction chamber and a discharge chamber; and
The check valve of any one of claims 1, 4, 7 and 11 disposed at a suction port formed in the suction chamber.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2020-0020135 | 2020-02-19 | ||
| KR1020200020135A KR102717005B1 (en) | 2020-02-19 | 2020-02-19 | Check valve and swash plate type compressor |
| PCT/KR2021/001276 WO2021167265A1 (en) | 2020-02-19 | 2021-02-01 | Check valve and swash plate compressor including same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115135878A CN115135878A (en) | 2022-09-30 |
| CN115135878B true CN115135878B (en) | 2024-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202180015250.0A Active CN115135878B (en) | 2020-02-19 | 2021-02-01 | Check valve and swash plate type compressor including the same |
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| Country | Link |
|---|---|
| KR (1) | KR102717005B1 (en) |
| CN (1) | CN115135878B (en) |
| WO (1) | WO2021167265A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05288186A (en) * | 1992-04-06 | 1993-11-02 | Zexel Corp | Inlet valve for compressor |
| KR101194431B1 (en) * | 2007-10-19 | 2012-10-24 | 산덴 가부시키가이샤 | Variable capacity compressor |
| KR20140104300A (en) * | 2013-02-20 | 2014-08-28 | 한라비스테온공조 주식회사 | Intake checking valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250873C (en) * | 2001-12-27 | 2006-04-12 | 株式会社丰田自动织机 | Compressor |
| KR101165947B1 (en) * | 2006-05-01 | 2012-07-18 | 한라공조주식회사 | Variable capacity type swash plate type compressor |
| JP4706617B2 (en) * | 2006-11-03 | 2011-06-22 | 株式会社豊田自動織機 | Compressor suction throttle valve |
| KR101452568B1 (en) * | 2012-02-13 | 2014-10-21 | 한라비스테온공조 주식회사 | swash plate type variable capacity compressor |
| KR101852448B1 (en) * | 2012-10-26 | 2018-04-27 | 한온시스템 주식회사 | Swash plate type compressor |
| KR101766508B1 (en) * | 2013-01-23 | 2017-08-08 | 한온시스템 주식회사 | Swash plate type compressor |
| KR102312403B1 (en) * | 2015-10-13 | 2021-10-15 | 한온시스템 주식회사 | Suction damping device of compressor |
-
2020
- 2020-02-19 KR KR1020200020135A patent/KR102717005B1/en active Active
-
2021
- 2021-02-01 CN CN202180015250.0A patent/CN115135878B/en active Active
- 2021-02-01 WO PCT/KR2021/001276 patent/WO2021167265A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05288186A (en) * | 1992-04-06 | 1993-11-02 | Zexel Corp | Inlet valve for compressor |
| KR101194431B1 (en) * | 2007-10-19 | 2012-10-24 | 산덴 가부시키가이샤 | Variable capacity compressor |
| KR20140104300A (en) * | 2013-02-20 | 2014-08-28 | 한라비스테온공조 주식회사 | Intake checking valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115135878A (en) | 2022-09-30 |
| WO2021167265A1 (en) | 2021-08-26 |
| KR20210105536A (en) | 2021-08-27 |
| KR102717005B1 (en) | 2024-10-15 |
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